From mboxrd@z Thu Jan 1 00:00:00 1970 From: George Georgalis Subject: Re: SATA_SIL works with 2.6.7-bk8 seagate drive, but oops Date: Fri, 2 Jul 2004 19:01:12 -0400 Sender: linux-ide-owner@vger.kernel.org Message-ID: <20040702230112.GB27065@trot.local> References: <20040625213433.GB6502@trot.local> <29181.1088498805@www29.gmx.net> <20040630044352.GB8841@trot.local> <40E25AC1.6030302@pobox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from ool-44c1e325.dyn.optonline.net ([68.193.227.37]:25010 "HELO dyn.galis.org") by vger.kernel.org with SMTP id S265041AbUGBXBM (ORCPT ); Fri, 2 Jul 2004 19:01:12 -0400 Content-Disposition: inline In-Reply-To: <40E25AC1.6030302@pobox.com> List-Id: linux-ide@vger.kernel.org To: Jeff Garzik Cc: Sebastian Slota , Linux Kernel Mail List , linux-ide@vger.kernel.org On Wed, Jun 30, 2004 at 02:16:33AM -0400, Jeff Garzik wrote: >George Georgalis wrote: >>I was able to dd ~140 GB with SATA_SIL today, on a stock bk kernel, till >>I ran out of disk, no errors. which was a pleasant unexpected surprise. >> >>but when I checked "Timing buffered disk reads" it was around 25 MB/sec >>not the ~52 MB/sec I saw before with the oops. The odd thing was this >>disk was not in the blacklist so I don't know why it was running slower. > > >Try mounting a filesystem, unmounting it, and then doing the timing. With some new (working) ram in the box, and root on hda; sata_sil gave pretty consistent 29 MB/sec as an auxiliary sda disk, mounted, remounted, unmounted, verified 29.50 +/- .40 MB/sec, consistently. However, when I boot with root on sda, I get better performance (?), up to 41MB/sec and consistently in the 30s; with x and many daemons (but unloaded)... Timing buffered disk reads: 100 MB in 3.05 seconds = 32.74 MB/sec Timing buffered disk reads: 112 MB in 3.04 seconds = 36.84 MB/sec Timing buffered disk reads: 114 MB in 3.01 seconds = 37.82 MB/sec Timing buffered disk reads: 104 MB in 3.02 seconds = 34.48 MB/sec Timing buffered disk reads: 110 MB in 3.00 seconds = 36.64 MB/sec Timing buffered disk reads: 94 MB in 3.01 seconds = 31.19 MB/sec Timing buffered disk reads: 88 MB in 3.01 seconds = 29.25 MB/sec Timing buffered disk reads: 90 MB in 3.06 seconds = 29.37 MB/sec Timing buffered disk reads: 88 MB in 3.01 seconds = 29.23 MB/sec Timing buffered disk reads: 108 MB in 3.03 seconds = 35.70 MB/sec Timing buffered disk reads: 120 MB in 3.04 seconds = 39.47 MB/sec Timing buffered disk reads: 88 MB in 3.00 seconds = 29.30 MB/sec (more or less random intervals, at least 5 seconds apart), this is running a bk kernel checked out June 28. I've written up to 200Gb to this disk and built a workstation on it, no errors. Thanks! // George -- George Georgalis, Architect and administrator, Linux services. IXOYE http://galis.org/george/ cell:646-331-2027 mailto:george@galis.org Key fingerprint = 5415 2738 61CF 6AE1 E9A7 9EF0 0186 503B 9831 1631